You Yiwen, Shan Ying, Chen Jing, Yue Huijun, You Bo, Shi Si, Li Xingyu, Cao Xiaolei
Department of Otorhinolaryngology, Affiliated Hospital of Nantong University, Nantong, China.
Department of Otorhinolaryngology, Medical School of Nantong University, Nantong, China.
Cancer Sci. 2015 Dec;106(12):1669-77. doi: 10.1111/cas.12818. Epub 2015 Oct 13.
Nasopharyngeal cancer (NPC) is an endemic type of head and neck cancer with a high rate of cervical lymph node metastasis. Metastasis is the major cause of death in NPC patients. Increasing evidence indicates that exosomes play a pivotal role in promoting cancer metastasis by enhancing angiogenesis and ECM degradation. Matrix metalloproteinase 13 is an important kind of matrix proteinase that is often overexpressed in various tumors and increases the risk of metastasis. However, little is known about the potential role of MMP13-containing exosomes in NPC. In this study, we found that MMP13 was overexpressed in NPC cells and exosomes purified from conditioned medium (CM) as well as NPC patients' plasma. Transwell analysis revealed that MMP13-containing exosomes facilitated the metastasis of NPC cells. Furthermore, siRNA inhibited the effect of MMP13-containing exosomes on tumor cells metastasis as well as angiogenesis. The current findings provided novel insight into the vital role of MMP13-containing exosomes in NPC progression which might offer unique insights for potential therapeutic strategies for NPC progressions.
鼻咽癌(NPC)是一种地方性头颈癌,颈部淋巴结转移率很高。转移是鼻咽癌患者死亡的主要原因。越来越多的证据表明,外泌体通过增强血管生成和细胞外基质(ECM)降解在促进癌症转移中起关键作用。基质金属蛋白酶13是一种重要的基质蛋白酶,在各种肿瘤中常过度表达,并增加转移风险。然而,关于含MMP13的外泌体在鼻咽癌中的潜在作用知之甚少。在本研究中,我们发现MMP13在鼻咽癌细胞、从条件培养基(CM)以及鼻咽癌患者血浆中纯化的外泌体中均过度表达。Transwell分析显示,含MMP13的外泌体促进了鼻咽癌细胞的转移。此外,小干扰RNA(siRNA)抑制了含MMP13的外泌体对肿瘤细胞转移以及血管生成的影响。目前的研究结果为含MMP13的外泌体在鼻咽癌进展中的重要作用提供了新的见解,这可能为鼻咽癌进展的潜在治疗策略提供独特的见解。